Search Result for "pteridospermopsida": 
Wordnet 3.0

NOUN (1)

1. extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies;
[syn: Pteridospermopsida, class Pteridospermopsida]



WordNet (r) 3.0 (2006):

Pteridospermopsida
    n 1: extinct gymnosperms most of Carboniferous to Jurassic: seed
         ferns and allies [syn: Pteridospermopsida, class
         Pteridospermopsida]